html,
body {
    width: 100vw;
    height: 100vh;
    margin: 0;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    background-image: url('./bj.jpg');
    }
    
span {
        /* text-emphasis: 'x' red; */
        text-align: left;
        color: #444;
        word-wrap: break-word;
}